:root {
    --primary-color: #A31F24;
    --primary-color-hover: #8a1a1f;
    --tag-color: #1890ff;
}

body {
    font-family: "思源宋体", SimSun, serif;
    margin: 0;
}

.navbar {
    padding: 12px 24px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 20px;
}

.navbar-title {
    margin: 0;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.version-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.toggle-icon {
    cursor: pointer;
    color: var(--primary-color);
    font-size: 24px;
    transition: transform 0.3s;
}

footer {
    text-align: center;
    padding: 20px;
    color: #a09a91;
    font-size: 14px;
    margin-top: 30px;
}

.back-button {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 20px;
    background: var(--primary-color);
    color: white !important;
    text-decoration: none;
    transition: all 0.3s ease;
}

.back-button i {
    margin-right: 8px;
}

.back-button:hover {
    background: var(--primary-color-hover);
    transform: translateX(-3px);
}

@media (max-width: 768px) {
    body {
        padding: 20px 10px;
    }
}